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Free space optical data transmission using photodetector array

Active Publication Date: 2019-06-27
MOLEX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a system that allows light to be transmitted wirelessly in free space using a laser. The system has a receiver that detects the laser and converts it into an electrical current. The receiver then sends the electrical current to a circuit that combines it with other electrical currents to create a signal. The technical benefit is the ability to transmit data wirelessly in free space using a laser.

Problems solved by technology

However, a challenge for the current free space interconnect systems is alignment of the transmitter with the receiver.
The process of initial alignment can be difficult and cost prohibitive.

Method used

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  • Free space optical data transmission using photodetector array
  • Free space optical data transmission using photodetector array
  • Free space optical data transmission using photodetector array

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Embodiment Construction

[0012]The detailed description that follows describes exemplary embodiments and the features disclosed are not intended to be limited to the expressly disclosed combination(s). Therefore, unless otherwise noted, features disclosed herein may be combined to form additional combinations that were not otherwise shown for purposes of brevity.

[0013]The present disclosure provides a system for communicating optical signals over free space with a high tolerance to misalignment between an optical transmitter and an optical receiver. The optical receiver uses an array of photodetectors and an electrical circuit to detect and convert optical signals received from the optical transmitter into voltage signals.

[0014]FIG. 1 illustrates a block diagram of an example free space optical communication system 100. The example free space optical communication system 100 includes at least an optical transmitter 110 and an optical receiver 150, separated by free space. Free space in this application refe...

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Abstract

A free space optical communication system includes an optical receiver configured to receive a light beam from an optical transmitter wirelessly in free space. The optical receiver includes an array of photodetectors and an electrical circuit. The array of photodetectors is configured to receive the light beam and convert optical signals of the light beam into electrical current. The electrical circuit is electrically coupled to the array of photodetectors and is configured to combine electrical current from the photodetectors and output a voltage or current signal.

Description

RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Application No. 62 / 549,617, filed Aug. 24, 2017, which is incorporated herein by reference in its entiretyTECHNICAL FIELD[0002]This disclosure relates to the field of data communication systems, more specifically to free space optical communication.DESCRIPTION OF RELATED ART[0003]Free-space optical links have been employed to communicate information optically without the use of optical fiber. A free-space link extends in a line of sight path between an optical transmitter and an optical receiver. Free-space optical links have the advantage of not requiring a physical installation of conductors.[0004]However, a challenge for the current free space interconnect systems is alignment of the transmitter with the receiver. The system must be precisely aligned. The precise alignment must then be maintained during operation. The process of initial alignment can be difficult and cost prohibitive.SUMMARY[0005]In a ...

Claims

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Application Information

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IPC IPC(8): H04B10/112H04B10/50H04B10/69
CPCH04B10/1121H04B10/503H04B10/69H04B10/11
Inventor SHIH, YUYUNCHEUNG, LEEHU, GONGJIAN
Owner MOLEX INC